Minneapolis-St. Paul, MN Canopy Temperature and Combined Urban Tree Index (CUTI), 2018-2021

This dataset includes a series of raster datasets of canopy temperature across Minneapolis-St. Paul, MN at a resolution of approximately 70 meters. There are data from five different warm, summer afternoons from 2018-2021. The canopy temperature data was derived from ECOSTRESS Land Surface Temperature and Emissivity data and high-resolution land cover data using a downscaling approach. Canopy temperature acts as a proxy of canopy health and function, with higher temperatures indicative of higher stress and lower function in the canopy. For each image, we also compute the combined urban tree index (CUTI), a metric we developed that provides an indication of relative benefits from urban canopy which arise from a combination of the amount and function/health of urban canopy (based on the canopy temperature). CUTI ranges from 0-1, with high values indicating areas likely experiencing greater canopy benefits due to greater canopy cover and better canopy health/function.

本数据集包含一系列覆盖美国明尼苏达州明尼阿波利斯-圣保罗都会区的冠层温度栅格数据集，空间分辨率约为70米。数据集涵盖2018至2021年间5个晴暖夏日午后的观测数据。冠层温度数据源自ECOSTRESS陆地表面温度与发射率数据集，以及高分辨率土地覆盖数据，通过降尺度方法生成。冠层温度可作为冠层健康状态与功能的替代指标，温度越高则代表冠层所受胁迫程度越高、功能表现越差。针对每幅影像，我们还计算了城市综合树木指数（combined urban tree index, CUTI）：该指标为我们自主研发，可反映城市冠层带来的相对效益，其综合考量了城市冠层的覆盖规模与功能/健康状态（基于冠层温度计算）。CUTI的取值区间为0至1，数值越高则代表该区域因冠层覆盖度更高、健康状态与功能更佳，从而获得了更显著的冠层生态效益。